I recently installed Chrome on Debian 12 + XFCE. Suddenly Chrome menus appeared in Firefox, such as “Open with Google Chrome” when I right click on a downloaded pdf.
How is this even a thing? And how do I get rid of them?? I looked under Applications in about:preferences, but nothing there. I assume FF is desktop agnostic and there’s some platform independent API allowing dynamic menu manipulation, but it isn’t something I know anything about. What are the specifics?
I’ve been looking at the XFCE .desktop files, and I expect that is the mechanism in this case, but I’d like to know what the application provides to allow it to operate.